baber/WOPTO huggingface dataset:
Patent GB-361433-A (GB)
Title: An improved centrifugal clutch
IPC: F16D43/18
Filed: 1930-08-26
Abstract: 361,433. Friction clutches. LOWNDES,A., 220,Annette Street, Toronto, Canada. Aug. 26, 1930, No. 25407. [Class 80 (ii).] In centrifugal clutches of the kind comprising floating friction elements disposed between the driving and driven members and movable into contact with the driven part by annular centrifugal blocks disposed radially within them, dogs projecting rigidly from the driving member have inclined faces contacting with the friction elements, tending to disengage them. The retarded action of the clutch renders it suitable for use with splitphase electromotors, allowing the starting winding to be thrown out prior to engagement. A driven drum 16, integral with a pulley 17, is loose on the driving-shaft 10 and coacts with friction shoes 24, which are disengaged by contact of their inclined ends 26 with the inclined ends 27 of dogs 15 on the flange 12 of a member 11 fast on the shaft 10. Centrifugal blocks 21 for thrusting the shoes into engagement slide radially on pins 20 extending from a ring 19, which is loosely mounted on the boss 13 of the driving member 11 so as to lag during acceleration. The blocks are interconnected to move in unison by projections 22 and recesses 23, and are retracted by a variably stressed spring ring 28 in an annular groove. The starting time of the clutch can be varied by increasing the weight of the shoes or decreasing that of the blocks.
Patent GB-155415-A (GB)
Title: Improvements in or relating to guards for power presses
IPC: F16P3/04
Filed: 1919-10-17
Abstract: 155,415. Butlers, Ltd., and Reeves, A. Oct. 17, 1919. Guards, controlling.-A slidable guard, such as a frame a<1>, a<4>, for power presses is brought into and out of position before the dies by a reciprocating endless chain c actuated by the reciprocating ram of the press. The chain c may be carried by sprocket wheels d, d' connected to the ram g by a toothed wheel e and rack f, f<1>. Springs such as a<5> may be placed at the ends of the guard to prevent the hands of an operator from being trapped between the guard and frame of the press.
Patent GB-384720-A (GB)
Title: Means for ensuring the feed of lubricant from a container into lubricating apparatus
IPC: F16N11/06
Filed: 1931-09-10
Abstract: 384,720. Force - feed lubricators. CHALMERS, R. A. and TECALEMIT, Ltd., Great West Road, Brentford, Middlesex. Sept. 10, 1931, No. 25447. [Class 12 (iii).] In a device wherein lubricant is expressed from a container 1 by a piston 12 a weight 18 is carried by a nut 10, 11 which bears against a flanged sleeve 13 secured to the piston and which is in threaded engagement with a screwed rod 9 which is swivelled in opposite directions or rotated continuously in one direction at varying speeds, the arrangement being such that the inertia effects of the weight, which is driven by the friction between the threads, act, due to the accelerations and retardations, to produce a periodic advancing movement of the nut, and thus of the piston, within the container. As shown in Fig. 1, the rod 9 is fixed within the container, which has an offset outlet tube 7, 8 connected to a swingable lubricator (not shown) co-operating with the axles or pins of a moving conveyer chain, whereby the container receives a swinging movement. The weight 18 has slots engaging headed screws 21, 22 on the split nut 10, 11, the parts of the latter having springs 16, 17, Fig. 2, therebetween, whereby, after lifting the weight, the parts 10, 11 spring apart to facilitate removal. A split washer 25, 26 secured to the flange 14 of the sleeve 13 engages grooves 23, 24 in the nut halves. When a predetermined pressure has been built up in the container, the friction between the threads of the nut and rod and between the nut and the flange 14 will be sufficiently great to prevent further relative movement between the nut and rod until the pressure drops. In a modification the container is stationary, and the outlet tube 7, 8 is rotatably mounted in the bottom thereof, the rod 9 being secured to the tube 7 and the nut 10, 11 bearing against the sleeve 13 through a ball thrust bearing. A one-way clutch may also be provided when necessary.
Patent GB-317767-A (GB)
Title: Improvements in periodic absorption refrigerating apparatus
IPC: F25B17/08
Filed: 1929-08-21
Abstract: 317,767. Normelli, W. B. Aug. 21, 1928, [Convention date]. Refrigerating, absorption systems for; cold accumulators; refrigerators, domestic.-Heat of condensation and absorption is recovered for useful purposes from a reversing system employing a solid absorbent. As shown, a generator-absorber 4 is located in a water or other liquid bath in the lower compartment of a tank and the condenser 6 in the upper compartment. The liquid in the lower compartment is heated electrically and the circuit is controlled by a thermostat 19, which also controls a valve in a pipe 20 providing communication between the compartments of the tank. Another communicating pipe 21 is provided. The compartments communicate only during the absorption period, the cool water descending to the lower compartment and the warm water rising to the upper, whence it may be withdrawn for use through a tap 22. Fresh cold water may be supplied through a pipe 16. If no warm water is used, a thermostat may be caused to open the tap 22 to run it off and to supply the fresh water. The evaporator 10 is arranged in an insulated compartment of a refrigerator and serves to cool a non-freezing liquid circulating by gravity to and from a cooling tank 12 in the storage space. Halide compounds of calcium and magnesium or activated carbon mav be used as absorbents and ammonia, amines, alcohols, ketones, mentanol, water and sulphur dioxide as refrigerants. . The Specification as open to inspection under Sect. 91 (3) (a) comprises also the following subject-matter :-A continuous refrigerating effect is obtained by the use of two reversing machines working out of phase and each comprising an air-cooled generator-absorber 1, Fig. 1 (Cancelled), containing a solid absorbent, a condenser 10, and an evaporator 12, the refrigerating-effect being transferred from the evaporator to a cold accumulator 17 arranged in a casing 26 in the refrigerator by a condensible fluid in a closed system. The generator-absorbers are disposed in compartments 20 having damper-controlled air ports 21, 23. The damper 24 controlling the ports 23 is connected to electric heaters 3 and controlled by thermostats to cause the damper to move into a vertical position to initiate an absorption period in one of the generator-absorbers. When the damper is moved to close one of the ports 23 the electric circuit to the corresponding heater is automatically completed. This subjectmatter does not appear in the Specification as accepted.
Patent GB-856262-A (GB)
Title: Method and apparatus for making prestressed pipes or similar bodies of concrete or similar mouldable material
IPC: B28B21/60
Filed: 1958-08-08
Abstract: 856,262. Moulding reinforced concrete pipes. LOCK JOINT PIPE CO. Aug. 8, 1958 [Dec. 11, 1957], No. 25471/58. Class 87(2). [Also in Groups X and XXVIII] Prestressed pipes 54, Fig. 8, of mouldable material such as concrete are made by locally weakening the steel reinforcing wires 27, Fig. 1, at two points, arranging the tensioned wires around a mould 10 with the weakened points inside and adjacent to each end face 25, embedding and bonding the wires in a concrete mix, and, after the concrete is cured, removing the wire ends by twisting the wire off at the weakened points. The mould is formed by shell plates 10 and 11 to which ends in the form of rings 12 and 13 are fitted. Semi-circular segments 18, 19, 20, 21 are attached to the shell plates 10 and 11 for use as a rolling ring during centrifugal moulding. The wires 27 are equally spaced circumferentially around the mould and are anchored at both ends by the devices 33. The anchoring device 33, Fig. 12, is formed at 35 for a twisting tool, e.g. a spanner and the wire is gripped by the spring loaded segmental jaws 42 which are caused to increase their grip by the conical seating 43 when tension is applied to the wire. The wire may have surface undulations as in Fig. 2 and may be flattened at 61 adjacent to the torsional weakening grooves 49. After the wire ends are removed the clear bores in the end face may be filled with protective plugs, e.g. of concrete.
Patent GB-815537-A (GB)
Title: Improvements in the production of n-nitroso-n-alkyl- and n-nitroso-n-cycloalkyl-hydroxylamines
IPC: C10L1/22
Filed: 1957-08-13
Abstract: The invention comprises a process for the production of N-nitroso-N-alkyl- or N-nitroso-N-cyclohexyl-, -cycloheptyl- or -cyclo-octyl-hydroxylamines or their derivatives in which the rings bear alkyl, hydroxyalkyl, or cyano substituents, or their ammonium or amine salts or complex metal compounds, in which a solution of an alkali nitrite is allowed to flow while cooling into an aqueous acid solution of the corresponding hydroxylamine in such a manner that the nitrous acid formed is immediately used in reaction with the hydroxylamine, and used in reaction with the hydroxylamine, and if desired reacting the N-nitroso compound simultaneously or subsequently with an equivalent amount of a water-soluble salt of a metal of Groups IIa-VIIa, Ib-IVb or VIII of the periodic classification, or alternatively reacting the N-nitroso compounds in inert organic solvents with anhydrous ammonia or amines.  Specified N-alkyl groups are methyl, ethyl, propyl, isopropyl, butyl, tert-buty-(2), heptyl-(4), dodecyl, octadecyl and tetramethyloctyl. The pH of the acid solution may be 0-6, and the solution is preferably cooled to between - 10 DEG  and + 10 DEG  C.  Suitable amines for the preparation of salts are aliphatic and cycloaliphatic primary, secondary and tertiary amines.  Specified metals are Be, Mg, Ca, Sr, Ba, Ce, V, U, Mn, Fe, Co, Ni, Cu, Ag, Zn, Hg, Al and Pb. Preferred salts are chlorides, sulphates, nitrates and acetates; the double decomposition may be carried out at pH 7-10.  Examples describe the preparation of (1)-(3) N-nitroso-N-cyclohexylhydroxylamine, and its ammonium and methylamine, cyclohexylamine and dicyclohexylamine salts, and its complexes with various metals; (4) and (5) N-nitroso-N-cyclo-octylhydroxylamine, its ammonium and cyclohexylamine salts and metal complexes; (6) N-nitroso-N-isopropyl-hydroxylamine copper complex and amine salts, and N-butyl-N-nitroso-hydroxylamine copper complex; (7) and (8) N-nitroso-N-cycloheptyl-hydroxylamine copper complex; and its ammonium and amine salts: (9) N-nitroso-N-methyl-hydroxylamine and its amine salts and copper complex; (10) N-nitroso-N-[(1 - methylol) - cyclohexyl] - hydroxylamine copper complex; (11) and (12) N-nitroso-[(1-cyano) - cyclohexyl] - hydroxylamine and its ammonium and amine salts, and copper complex.
Patent GB-1235898-A (GB)
Title: Improvements in or relating to hydropneumatic suspension units
IPC: B60G17/044
Filed: 1968-05-28
Abstract: 1,235,898. Self-levelling suspension units. HOESCH A.G. 28 May, 1968 [16 June, 1967], No. 25498/68. Heading F2S. In a self-levelling hydropneumatic suspension unit, the self-levelling action is controlled by a rod 25 reciprocable in the hollow piston rod 4 of a damped hydraulic piston-cylinder unit in which the hydraulic fluid is pressurized by gasfilled chambers 141 and 161. The invention requires (a) that the rod 25 lifts a slide 43 from a port 44 in the piston when the unit is in its level-regulated state; (b) that outward piston movement is damped by the combination of the port 44 and a valved port 47 which function is parallel; (c) that inward piston movement is damped by apertures in a cylinder end member, 11. These apertures include one having a limit valve 49 which is in parallel with a valved or unvalved damping port 48. The end member 11 may contain another such limit valve in parallel with a damping port, to augment the damping of outward piston movement. Fig. 1 shows the unit in its contracted state with respect to its required mean level position. In this state dynamic movement of the piston will pump fluid from the chamber 162 by way of the cylinder 8 to the chamber 142 thereby setting up a pressure difference whose effect on the piston is to drive it outwardly toward the required mean position. When this position is reached (Fig. 2, not shown) the slide 47 is lifted by the projection 27 on the rod 20 and pumping ceases. Reduction in the load in the level-regulated unit will cause the piston to move further out and so pull the rod 20 into a position in which its end formation 28 uncovers a port 37 and so opens a flow path from chamber 142 to chamber 162 by way of an annular return-flow channel 13 between the cylinder 8 and a tube 12 closely surrounding it. This reduces the pressure in the chamber 142 and results in inward piston movement back toward the mean position. In the range of movement between the mean and the over-extended positions, the movement of the control rod with respect to the hollow piston rod, and hence the action of the spring 31 biasing the control rods end formation 28 against its association port, is itself damped by the metering action of a conical portion 29 on the control rod. Fig. 4 (not shown) depicts a modified construction not having the last-named feature.
Patent GB-1156869-A (GB)
Title: Improvements in or relating to Dump Scrapers.
IPC: B65G65/06
Filed: 1968-05-28
Abstract: 1,156,869. Dump scrapers. GUSTAV SCHADE MASCHINENFABRIK. 28 May, 1968 [12 Feb., 1968], No. 25503/68. Heading B8E. A dump 2 of material is discharged into two endless belts 7 and 7<SP>1</SP> by means of two endless scraper conveyers 10 and 10<SP>1</SP> carried pivotally at 9 and 9<SP>1</SP> by frame 1, which frame runs in parallel manner along the length of the dump on rails 4. Conveyer 10<SP>1</SP> feeds to conveyer 7<SP>1</SP> and conveyer 10 feeds to conveyer 7. Alternatively conveyer 10 may feed to conveyer 10<SP>1</SP> which feeds to a single discharge conveyer 7<SP>1</SP>. The conveyers 10 and 10<SP>1</SP> are connected at 15<SP>1</SP> by a roller and rolling-surface connection and are supported at 19 so that, as the conveyers fall due to successive layers of material being scraped from the dump 2, they overlap and finally finish in the lower position shown in Fig. 1. The conveyer 10 may be displaced sideways on its pivot 9 so as to lie laterally of conveyer 10<SP>1</SP> to feed away the part of the dump which then remains.
Patent GB-1102167-A (GB)
Title: Improvements in or relating to solenoids
IPC: H01F7/124
Filed: 1965-06-16
Abstract: 1,102,167. Electromagnets. B. SINGH. 16 June, 1966 [16 June, 1965], No. 25520/65. Heading HIP. A solenoid, e.g. for actuating the fuel control valve of a diesel engine, has two concentric armatures 20, 21 movable within two selectively energizable coils 10, 11, the outer armature 20 being moved to a right-hand position against a spring 24 by the coil 10, a flanged end 32 of the armature then engaging and being held by a locking arm 28, and the inner armature 21 being moved by the coil 11 so as to release the catch and allow the first armature to spring back to its initial position. The outer armature 20 comprises a hollow cylinder having a screw-threaded end 22 for attachment to the actuating member 23 of a fuel valve, whilst the inner armature 21 is a sliding fit within the cylinder and has a tapered end which engages a cam 27 to release the locking arm 28. Upon de-energization of coil 11, a spring 33 returns the inner armature to its initial left-hand position.
Patent GB-259974-A (GB)
Title: Improvements in and relating to combined weighing and hoisting machinery
IPC: G01G19/14
Filed: 1926-10-13
Abstract: 259,974. Dondelinger, F. Oct. 14, 1925, [Convention date]. Apparatus fitted to hoisting machinery.-In a combined hoisting and weighing apparatus mounted on an overhead trolly lifting levers for raising the weighing mechanism into operative position are supported at one extremity on the edges of the trolly, and support at an intermediate point, a frame containing the weighing levers which are adapted to lift the hoisting mechanism, the lifting levers being supported at their opposite extremities on a collar or the like mounted on a threaded shaft displaceable in a vertical direction. The hoisting drum 13 and the free end of the hoisting cable 14<a> are supported on a platform 10 provided on the under-side with conical recesses 11. When hoisting is in progress the platform 10 is supported upon cones 9 on the trolly fitting into the conical recesses 11. The frame 8 of the weighing-apparatus, containing the usual weighing levers normally rests (through the medium of inclined positioning lugs 7) upon the walls 6 of the trolly. A shaft 16 supported on the frame 8 drives a pinion 14 which has a screw-threaded connection with a shaft 13a so as to move the shaft vertically. A collar 20 at the lower end of the shaft 13a engages the ends of lifting levers 28 fulcrumed on the trolly. The lifting levers are arranged to engage the frame 8 of the weighing-apparatus as the shaft 13a rises, and to lift the weighing-apparatus until a bridge piece resting on the weighing levers engages the platform 10 and raises it clear of its supporting cones 9 whereupon a weighing operation may be performed. The trolly may be provided with means for preventing the load being lifted or the wagon or its travelling bridge being displaced whilst the weighing-apparatus is engaged.
Patent GB-919667-A (GB)
Title: Improvements in exhaust gas catalytic purifiers and mufflers for internal combustionengines
IPC: F01N3/20
Filed: 1961-07-14
Abstract: 919,667. Purifying and silencing exhaust. AMERICAN CYANAMID CO. July 14, 1961 [July 22, 1960; April 3, 1961], No. 25560/61. Class 7(2) A catalytic muffler comprises a housing 1, Fig. 1, having a coaxial tube 4 which is perforated intermediate its ends, a coaxial sleeve 12 having a cross-section intermediate in size between those of the tube 4 and the housing 1, space 13 containing a catalyst and a space outside the sleeve through which the catalytically-oxidized exhaust gases are carried to outlet 5. The housing, tube and sleeve may be cylindrical or elliptical. Exhaust gases passing through Venturi 8 draw in ambient air from opening 11 and pass through member 10 and radially outwardly through perforations 7, catalyst bed 13 and sleeve 12 and thence to the outlet 5. The catalyst is maintained free of voids by means of a plate 25 acted on by springs 24 positioned in refractory wool 25a, which compresses the catalyst against a fixed or spring-loaded plate 17. The exit end plate 3 is removable to facilitate replenishment of the catalyst bed. If the oxidized exhaust gas temperature exceeds a predetermined value, a loop 32 melts permitting coiled and looped portions of wire 30 to stretch under the pressure of exhaust gases impinging on hinged cap 29 which is thus opened to permit raw exhaust gas to pass directly to the outlet 5. In another embodiment, part of the exhaust gases are arranged to by-pass the Venturi 234, Fig. 5, through a pressure or thermally responsive valve 244, and in a modification the spring 246 is arranged in the ambient air passage 239. A fusion cap 259 permits exit of gases without oxidation at excess temperatures. In a further embodiment the Venturi 133, Fig. 4, by-pass conduit 130 and valve 124 are arranged before a separate catalytic muffler 112. The valve stem 126 is positioned in a polyamide or polyfluorohydrocarbon bearing 127. Catalysts. An iron oxide-chromium oxide prepared from 85-97% of Fe 2 O 3  and 0À5-15 % of Cr 2 O 3  may be used.
Patent GB-281435-A (GB)
Title: Improvements in apparatus for delivering liquids in measured quantities by volume
IPC: B67D7/16
Filed: 1926-10-14
Abstract: 281,435. Bremner, D. O. Oct. 14, 1926. Moving-chamber apparatus.-Apparatus for delivering measured volumes of liquid comprising an oscillating unit with two measuring chambers, as described in Specification 265,266, is to operate automatically or semiautomatically. The oscillating unit is provided with chambers 6<a>, 6<b>, Fig. 2 which alternately receive the overflow from the measuring chambers, floats 2<a>, 2b in the chambers being conected to a shaft 4 having cams 7<a>, 7b, Fig. 3. When a float is raised, the cam is removed from engagement with the end of a lever 8<a> or 8<b>, and the inlet valve 12, Fig. 5, is closed by its spring 13 aided by the supply pressure. The pressure the opens a valve 14 against a, spring 16 so that further liquid pumped returns to the source of supply the movement of the valve 14 moving a catch out of engagement with a stop, so that the oscillating unit is moved by gravitation. In a modification, operating semi-automatically, the first part of the movement is obtained by a hand-operated member, and the catch is operated by the inlet valve. In order to prevent operation until the discharge sump is empty, the arm of a float in the sump is adapted when the sump contains liquid to engage stops on the oscillating unit. Specifications 211,097 and 262,367 also are referred to.
Patent GB-260246-A (GB)
Title: Improvements in or relating to acoustic instruments
IPC: H04R1/10
Filed: 1926-10-14
Abstract: 260,246. Bloch, A. Oct. 26, 1925, [Convention date]. Hearing-appliances; stethoscopes.- To isolate desired sounds from parasitic noises a plate 1, covered by a layer of swansdown 7 and preferably oval or pear-shaped, which is connected to, or may be replaced by, a stethoscope or the like, is secured to a pneumatic cushion 4 surrounding the ear of the listener, so that the thickness of the layer of air between the plate and the ear can be adjusted to resonance with the desired sounds. The plate may slide within a similarlyshaped member 3 to which the pneumatic cushion is attached.
Patent GB-1352785-A (GB)
Title: Respiratory apparatus
IPC: A61M16/00
Filed: 1971-04-19
Abstract: 1352785 Respiratory apparatus F M BIRD and H L POHNDORF 19 April 1971 [6 April 1970 16 Feb 1971] 25635/71 Heading A5T [Also in Division F2] A respiratory apparatus for cardiopulmonary therapy includes: a servo control valve body 52, Fig. 2, having an inlet 54 adapted to be connected to a source of pressurised air; an outlet 56, Fig. 5, for communication with the airway of a patient; a phase control valve structure including a valve element 208 movable to an open position to direct air flow between the inlet and outlet for an inspiratory phase, and to a closed position interrupting the flow between inlet and outlet during an expiratory phase; a shaft 62 mounted in the body 52 for movement to place the valve element 208 in either of its open or closed positions; and an expansible chamber 148 adapted for communication with the airway of the patient and operable to move the shaft 62 in response to the patient's breathing. A flow-controlling valve 58 is provided to selectively adjust the air flow rate to vary the length of the inspiratory phase. The chamber 148 is defined by a diaphragm 86 mounted on the shaft 62 adjacent its end and is in communication with the airway of the patient via a hub 70. A flexible diaphragm seal 102 exhausts the chamber to atmosphere during the expiratory phase and closes the chamber during the inspiratory phase. A condenser 92 having a drip-preventing skirt 96 defines an opening 98 for the passage of the exhalation gases to atmosphere. The sensitivity pressure (i.e. the pressure required for initiation of the inspiratory phase) is adjusted by means of a wheel 150 threadably received on the shaft 62, the wheel being provided with an armature 158 for attraction by a magnet 206 fixed in the housing 48. The peak inspiratory pressure (i.e. the pressure required for initiation of the inspiratory phase) is adjusted by a similar wheel 152. The outlet 56 communicates with a breathing head assembly (18), Fig. 1 (not shown), which in turn includes a Venturi assembly (20), a gate valve assembly (22), a micro-nebulizer (24), and a mouthpiece (26) for communication with the patient's airway. In an alternative embodiment. Fig. 8 (not shown), a cap (350) is mounted on the valve body and is provided with a central opening (360) through which an extension of the shaft projects to facilitate manual grasping thereof for manual cyling of the control valve.